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SQLITE3_EXEC(3)            Library Functions Manual            SQLITE3_EXEC(3)

NAME
     sqlite3_exec - One-Step Query Execution Interface

SYNOPSIS
     int
     sqlite3_exec(sqlite3*, const char *sql,
         int (*callback)(void*,int,char**,char**), void *,
         char **errmsg                              );

DESCRIPTION
     The sqlite3_exec() interface is a convenience wrapper around
     sqlite3_prepare_v2(), sqlite3_step(), and sqlite3_finalize(), that allows
     an application to run multiple statements of SQL without having to use a
     lot of C code.

     The sqlite3_exec() interface runs zero or more UTF-8 encoded, semicolon-
     separate SQL statements passed into its 2nd argument, in the context of
     the database connection passed in as its 1st argument.  If the callback
     function of the 3rd argument to sqlite3_exec() is not NULL, then it is
     invoked for each result row coming out of the evaluated SQL statements.
     The 4th argument to sqlite3_exec() is relayed through to the 1st argument
     of each callback invocation.  If the callback pointer to sqlite3_exec()
     is NULL, then no callback is ever invoked and result rows are ignored.

     If an error occurs while evaluating the SQL statements passed into
     sqlite3_exec(), then execution of the current statement stops and
     subsequent statements are skipped.  If the 5th parameter to
     sqlite3_exec() is not NULL then any error message is written into memory
     obtained from sqlite3_malloc() and passed back through the 5th parameter.
     To avoid memory leaks, the application should invoke sqlite3_free() on
     error message strings returned through the 5th parameter of
     sqlite3_exec() after the error message string is no longer needed.  If
     the 5th parameter to sqlite3_exec() is not NULL and no errors occur, then
     sqlite3_exec() sets the pointer in its 5th parameter to NULL before
     returning.

     If an sqlite3_exec() callback returns non-zero, the sqlite3_exec()
     routine returns SQLITE_ABORT without invoking the callback again and
     without running any subsequent SQL statements.

     The 2nd argument to the sqlite3_exec() callback function is the number of
     columns in the result.  The 3rd argument to the sqlite3_exec() callback
     is an array of pointers to strings obtained as if from
     sqlite3_column_text(), one for each column.  If an element of a result
     row is NULL then the corresponding string pointer for the sqlite3_exec()
     callback is a NULL pointer.  The 4th argument to the sqlite3_exec()
     callback is an array of pointers to strings where each entry represents
     the name of corresponding result column as obtained from
     sqlite3_column_name().

     If the 2nd parameter to sqlite3_exec() is a NULL pointer, a pointer to an
     empty string, or a pointer that contains only whitespace and/or SQL
     comments, then no SQL statements are evaluated and the database is not
     changed.

     Restrictions:

        The application must ensure that the 1st parameter to sqlite3_exec()
         is a valid and open database connection.

        The application must not close the database connection specified by
         the 1st parameter to sqlite3_exec() while sqlite3_exec() is running.

        The application must not modify the SQL statement text passed into
         the 2nd parameter of sqlite3_exec() while sqlite3_exec() is running.

SEE ALSO
     sqlite3(3), sqlite3_column_name(3), sqlite3_column_blob(3),
     sqlite3_finalize(3), sqlite3_malloc(3), sqlite3_prepare(3),
     sqlite3_step(3)

NetBSD 8.0                      March 11, 2017                      NetBSD 8.0